#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
#include <conio.h>     /*getch()函数使用的头文件*/
#include <windows.h>  /*Sleep()函数使用的头文件*/
#include <string.h>   /*strcmp()函数使用的头文件*/
#include<assert.h>
 
 
 
 
/*图书结构体：图书编号，图书名，图书作者，出版社，库存量*/
typedef struct Book
{
	int iNum;
	char acName[15];
	char acAuthor[15];
	char acPress[15];
	int iAmount;
	struct Book* next;
}Book;
 
/*读者：读者编号，读者姓名，性别，可借书数,读者已借书的编号*/
typedef struct Reader
{
	int iNum;
	char acName[15];
	char acSex[4];
	char position[20];
	int iMax;         //Student 20本 teacher 40本
	int iAmount;
	int aiBookId[100];
	int balance;
	int day;
	struct Reader* next;
}Reader;
 
 
void ShowLibInfo(const Book* book, const Reader* reader);
void ShowLibBook(Book* book);
Book* AddBook(Book* book);
Book* DealoldBook(Book* book);
void foundBook(Book* book);
void foundReader_Info(Reader* reader);
void foundReaderInfo(Reader* reader);
Reader* LendBook(Reader* reader, Book* book);
void returnBook(Reader* reader, Book* book);
void save(Book* book);
Book* read1();
 
 
void ShowMainMenu()
{
	system("cls");
	printf("\n\n\n\n\n");
	printf("\t|----------------------欢迎进入---------------------------\n");
	printf("\t|                    读者管理系统                              \n");
	printf("\t|                  1、查询图书馆的总信息                         \n");
	printf("\t|                  2、查询图书馆藏书信息                          \n");
	printf("\t|                  3、存入新书                                  \n");
	printf("\t|                  4、旧书处理                                  \n");
	printf("\t|                  5、根据书名检索书刊信息                        \n");
	printf("\t|                  6、查询读者的借阅信息                         \n");
	printf("\t|                  7、查询读者信息                              \n");
	printf("\t|                  8、读者借书                                 \n");
	printf("\t|                  9、读者还书                                 \n");
	printf("\t|                  10、文件保存                                 \n");
	printf("\t|                  11、从文件读取                                \n");
	printf("\t|                  0、退出                                     \n");
	printf("\t|---------------------------------------------------------\n");
	printf("新打开程序需先添加管理员\n");
	printf("\n");
	printf("\t\t请选择（0-11）：");
}




int main()
{
	Book* book = NULL;
	Reader* reader = NULL;
 
 
 
	int iItem;
	ShowMainMenu();/*调用ShowMainMenu函数绘制界面*/
	scanf("%d", &iItem);/*提示用户输入数字*/
	getchar();
	while (1)
	{
		switch (iItem)
		{
		case 0:return 0;
			break;
		case 1:ShowLibInfo(book, reader);
			break;
		case 2:ShowLibBook(book);
			break;
		case 3:book = AddBook(book);
			break;
		case 4:book = DealoldBook(book);
			break;
		case 5:foundBook(book);
			break;
		case 6:foundReader_Info(reader);
			break;
		case 7:foundReaderInfo(reader);
			break;
		case 8:reader = LendBook(reader, book);
			break;
		case 9:returnBook(reader, book);
			break;
		case 10:save(book);
			break;
		case 11:book = read1();
			break;
		default:
			printf("\t输入有误，请重新输入!\n");
			Sleep(2000);
		}
		ShowMainMenu();/*调用ShowMainMenu函数绘制界面*/
		scanf("%d", &iItem);/*提示用户输入数字*/
		getchar();
	}
	return 0;
}


void ShowLibInfo(const Book* book1, const Reader* reader1)
{
	Book* book = book1;
	Reader* reader = reader1;
 
 
	int bookNUm = 0, readerNUm = 0, mangerNUm = 0;
	while (book != NULL)
	{
		bookNUm++;
		book = book->next;
	}
	while (reader != NULL)
	{
		readerNUm++;
		reader = reader->next;
	}
 
	printf("本图书馆共有藏书%d本,读者%d人\n", bookNUm, readerNUm);
	printf("按任意键返回\n");
	getchar();
	return;
}
 
void ShowLibBook(Book* book1)
{
	Book* book = book1;
	while (book != NULL)
	{                     // \t :制表符
		printf("%d\t%s\t%s\t%s\t%d\n", book->iNum, book->acName, book->acAuthor, book->acPress, book->iAmount);
		book = book->next;
	}
	printf("\n按任意键返回\n");
	getchar();
	return;
}
Book* AddBook(Book* book1)
{
	Book* book = book1;
 
	if (book == NULL)
	{
 
		Book* tmp = (Book*)malloc(sizeof(Book));
		tmp->next = NULL;
		assert(tmp);
		printf("输入书的编号:");
		scanf("%d", &tmp->iNum);
		getchar();
		printf("输入书的名称:");
		gets(&tmp->acName);
		printf("输入书的作者:");
		gets(tmp->acAuthor);
		printf("输入书的出版社:");
		gets(tmp->acPress);
		printf("输入书的库存量:");
		scanf("%d", &tmp->iAmount);
		book = tmp;
 
		printf("按任意键返回\n");
		getchar();
		return book;
 
		return;
	}
 
	while (1)
	{
		while (book->next == NULL)
		{
			int flag = 1;
			while (flag)
			{
				Book* tmp = (Book*)malloc(sizeof(Book));
 
				tmp->next = NULL;
				assert(tmp);
				printf("输入书的编号:");
				scanf("%d", &tmp->iNum);
				getchar();
				printf("输入书的名称:");
				gets(&tmp->acName);
				printf("输入书的作者:");
				gets(tmp->acAuthor);
				printf("输入书的出版社:");
				gets(tmp->acPress);
				printf("输入书的库存量:");
				scanf("%d", &tmp->iAmount);
 
				book->next = tmp;
 
				printf("是否继续输入:1==>继续\t0==>结束\t");
				scanf("%d", &flag);
				getchar();
				if (flag == 0)
				{
					printf("按任意键返回\n");
					getchar();
					return book1;
				}
			}
		}
		book = book->next;
	}
	printf("按任意键返回\n");
	getchar();
	return;
}
 
 
 
 
Book* DealoldBook(Book* book1)
{
	Book* book = book1;
	Book* prev = book1;
	printf("输入要处理旧书的编号:");
	int id;
	scanf("%d", &id);
	getchar();
	while (book != NULL)
	{
 
		if (id == book->iNum)
		{
			if (book1 == book)
			{
				book = book->next;
				free(prev);
				return book;
			}
			prev->next = book->next;
			free(book);                     // free():释放资源
			printf("已将旧书处理掉!\n");
			printf("按任意键返回\n");
			getchar();
			return book1;
		}
		prev = book;
		book = book->next;
	}
	printf("没有找到该图书\n");
	printf("按任意键返回\n");
	getchar();
	return book1;
}